1/9 people voted for kiwi. So, 1/9 needs to be transformed into a decimal. 1/9 is equivalent to 0.111... a repeating decimal. Since 0.111.. is not a whole # or an integer, it is a rational number. If you are having trouble understanding rational numbers, check out the following link: https://www.mathsisfun.com/rational-numbers.html
No. This is not random sampling as the students chose are not chosen at random. Random sampling would be something done where each sample has equal probability of being chosen. Clearly this is not random sampling.
